WordPress at a glance
filter is not described

woocommerce_debug_tools filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_debug_tools', 'filter_function_name_8070' );
function filter_function_name_8070( $tools ){
	// filter...

	return $tools;
}
$tools
-

Where the hook is called

WC_REST_System_Status_Tools_V2_Controller::get_tools()
woocommerce_debug_tools

Where in WP core the hook is used WooCommerce

woocommerce/packages/woocommerce-admin/src/Features/Analytics.php 45
add_filter( 'woocommerce_debug_tools', array( $this, 'register_cache_clear_tool' ) );